What is the oil capacity of a Chevy 2 and half liter engine?

There's no Chevy engine that's exactly "2 and a half liters." Chevrolet has produced many engines in the 2.0L to 3.0L range, but none precisely 2.5L. To know the oil capacity, you need to specify the *exact* engine code (often found on a sticker under the hood or in the owner's manual). The oil capacity will vary even within similar engine displacements depending on the year and specific model.